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Preparation and energy storage application of a long-life and high rate performance pseudocapacitive COF material linked with –NH– bonds

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Abstract

A new covalent organic framework material (NWNU-COF-1) linked with –NH– bonds is synthesized by the condensation reaction of melamine and 2,4,6-trichloro-1,3,5-triazine and its structure and properties are characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), N2 adsorption–desorption, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The BET specific surface area of NWNU-COF-1 is 301.149 m2 g−1, and the pore size is about 1.41 nm. The preparation is also simple and cheap. This material exhibits a significant pseudocapacitance characteristic in a 6 M potassium hydroxide electrolyte, and the highest specific capacitance value of 155.38 F g−1 at 0.25 A g−1 current density in a three electrode configuration. This COF also demonstrates about 100% capacitance retention after 20 000 galvanostatic charge–discharge cycles, which is equal, even better compared with the COF materials reported previously, the nano/mesoporous carbon materials and even nitrogen doped carbons.

Graphical abstract: Preparation and energy storage application of a long-life and high rate performance pseudocapacitive COF material linked with –NH– bonds

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Publication details

The article was received on 21 Apr 2018, accepted on 06 Jul 2018 and first published on 10 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ01942H
Citation: New J. Chem., 2018, Advance Article
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    Preparation and energy storage application of a long-life and high rate performance pseudocapacitive COF material linked with –NH– bonds

    R. Xue, H. Guo, L. Yue, T. Wang, M. Wang, Q. Li, H. Liu and W. Yang, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ01942H

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